mcgraw



E. 0. McGRAW. THE MAKING MACHINE.

APPLICATIQN FILED MAYH. 1914-.

1,333,927. Patented Man 16, '1920.

Q e swam-sneer 2.

E. C. MCGRAW.

TIRE MAKING FMQHINE.

APPLICATION men MAY t4. m4

1,333,927. Patented Mar. 16, 1920.

6 SHEETS-SHEET 3.

a g l L 4.44

E. C. McGHAW.

TIRE MAKING MACHINE.

APPLICATION mu) MAY :4, 1914.

1,333,927. Patented Mar. 16,1920.

6 SHEETS-SHEET 4v E. C. MCGRAW.

TIRE MAKING MACHINE.

APPLICATION FILED MAY14, 1914.

Patented Mar. 16, 1920.

6 SHEETS-SHEET 5 wmvtoz E. C. MBGRAW.

TIRE MAKING MACHlNE.

APPUCATION man MAY I4, I914.

1 ,333,927. Patented Mar. 16, 1920.,

6 SHEETS-SHEET 6- 315' if if V anmzutoz wi/lmeaoeo MGW UNITED STATES PATENT OFFICE.

EDWIN C. MOGRAW, OF EAST PALESTINE, OHIO, ASSIGNOR TO THE MOGRAW TIRE AND RUBBER COMPANY, OF EAST PALESTINE, OHIO, A CORPORATION OE OHIO.

TIRE-MAKING IEACHIN E.

1,333,927 v simm s:- or Letters Patent Patented Mar. 16, 1920. Application filed May 14, 1914. Serial No. 088,488.

To all il /M1112 it may concern brackets 12, 13 and 1-1, the core of a. roll Be it known that I, EDWIN C. MoGnAw, lying on the inclined ways of a bracket free a citizen of the United States, residin r at to slide in either direction, up or down, lying East Palestine, in the county of Colombians normally against its corresponding stockand State of Ohio, have invented a new and roll 18, and, in fact, bcin operated by the 60 useful I mprovcmcnt in Tire-Making Mastock-roll as it turns, so t at the discarded chines. of which the following is a specilicnlining fabric is taken up by the lining-roll tion. 19 and wound about its core. As the opera- My invention relates to tire making me tion proceeds the size of the stock-roll dc 1o chines. Its object is to provide a machine creases while the size of the lining-roll in 65 which shall be rapid and elfectivc and yet creases. The lining-roll is free to move in simple in construction and operation. To accordance with the depletion of the stockthis end it comprises the combinations of roll and the increase of the lining-roll.

parts set forth in the appended claims. Moreover, this method of placing the liningis In the drawings roll makes itcasy to handle so that one man 70 Figure l is a perspective view looking in can readily remove the lining-roll and its at a corner of the front of the machine; wound fabric and replace a core.

Fig. 2 is a side elevation; 20, 21, 22 represent tension-rolls each of Fig. 3 is a front elevation; which is governed by a. tension device 23 of F ig. 4 is a transverse section looking down customary form, comprisin a band strap 75 upon the treadle mechanism; surroundlng the tension-r01 an extending Fig. 5 is a longitudinal section illustrating arm and an adjustable weight. 24 and the gearing devices; represent a series of gniddrolls, there being Fig. 6 is a side elevation of the gearing two below each tension-roll, arranged, as in- .25 devices; dicated, so that the fabric may come from #0 Fig. 7 is a sectional detail of the block a stock roll, pass around and below the first operating devicegHidQJOll 24, up over the tension-roll 20 and Fig. 8 1s a detail showing the locking parts then down and below the ser and guide-roll connecting the two treadles; 25. The fabric thus guided passes over Fig. 9 1s a plan view of the stitching or directing-rolls 26, which are carried b so spinning mechanism; and brackets 27. one at each end. I have indi- Fig. 10 is a side elevation partly in seccatcd on this frame three sets of stock-rolls, tion of the stitching or spinning mechm lining-rolls, tension-rolls and guide-rolls,benism. cause this set comprises what is generally In the drawings, 10 represents the bass of used. That is, means for fccdin on two 90 the stock-holding and stock-feeding part of layers of fabric and means for t en feedthe machine, that is, the fabric supply diing and superimposing on the other layers a vision of the machine. 11 is a skeleton frame wider layer of fabric. f forming one of the ends of the fabric supply At 28 I have shown 1perforritions in the structure. 12, 13 and 14 represent rearbracket 27 any of whic may support the 9-3 wardly extending brackets or arms. In ends of a bail 29 adapt-ed to receive the free these brackets or arms are pockets 15, 16, 1?. end of the friction fabric after it has been each of which receives an end of a corset applied to the ring-core and cut and thrown a stock-roll 18. Each of these stock-rolls back. By this means I have the free procarries rubber fabric. That is, the carry 'truding end of the fabric convenient for the 161) the friction or rubber impregnate fabric next operation. about which is wound a. rotecting cotton Immediately in front of the stock-holding fabric so that the rubber abric in fact lies and stock-feeding frame lies a frame 30 between two layers of the lining cotton which extends to one side to hold the drivso fabric. As the stock-roll is operated or as in mechanism. 31 represents a driving the friction fabric is drawn from the stockpu ley, here the usual form of split pulley, roll the lining fabric must be removed and which rotates a shaft 32 journaled in the wound up. 19 represents rolls for receiving frame 30. The shaft 32 rotates a pinion 33 the Iinin as it is unwound from the stools which driyes a gear-wheel 34 secured to a pa rolls. T cse lining-rolls 19 play in the shaft 35, likewise joprnaledjn the frame 30.

Hill.

The shaft 35 carries a cone-clutch 36 which engage either a gear-wheel 37 on its rig it or a pinion 38 on its left. I have illustrated a simple form of clutch. Obviously any one of various well-known forms may be used. \Vhen the clutch 36 engagcs the hub of the geaiwvhecl 37 it in turn rotates a pinion 39 secured to a shaft it), likewise journaled in hearings in the frame 30. \Vhcn the clutch 36 engages the pinion 38 that pinion rotates a gear-wheel ll st't'lll'etl to the shaft 9. The shaft 40 bears at its outer end a ring-core 42. It is the function of the gears described to impart to thc ring-core 42 at will and instantly either a low speed or a high speed. Obviously when the pin ion 39 is rotated by the larger gear-wheel 37 it will rapidly rotate the ringwore. ()n the other hand, when the shaft 40 is turned by the gear-wheel 41 the shaft 40 will he slowly rotated imparting the slow speed to the ringcore. It will he observed that in this simple construction the three shafts lie in a vertical plane, and that by the use of the three gearwheels and the three pinions with the governing clutch I vary the speed in accordance with the requirements of the tire makin art. 7

i govern the operation of the clutch mechanism by two lever mechanisms though, as will be seen, one lever might serve the purpose but for the added convenience of the two. A trcadle -13 serves to partially rotate a shaft 44. Extending from the shaft 44 is a bar 45 whose function will be described. Another treadle -16 serves to partially rotate a shaft 47 journaled in the frame and having an extending arm 48 spring-pressed, as indicated at 49. The shaft 47 bears substantially at its center a yoke 50 which embraces the shaft 32 and is pivoted to a connecting horizontal link 51 which in turn is pivoted to a connecting link 52 having a yoke which takes about the end of, the shaft 35 engaging collars thereon so as to reci 'irocate the shaft 35 and thereby adjust the clutch 36. A downward pressure on the trcadle 46 will serve to draw out the link 52 and to bring the clutch into position for low speed: while the release of the treadie 46 will have the opposite effect. From one end of the shaft 17 projects an arm 53 which extends beneath the arm 45, the two lapping, as indicated at 54. The purpose of this is that the parts connected with the treadle 46 may he operated throu h the medium of the treadle 43 if desired. lilheparts might be operated by thetrcadle 46 by first pressing down upon the trcadle for low speed and then lifting it up for high speed. The trcadle it, produces the; semc effect vhcn it is pressed down as the treadle 46 does when it is lifted, and I have, therefore, provided it for the convenience of the operator who then may stand in front of the ring-core, and so that he may conveniently press down the trcadlc 43 when he wants high speed.

55 represents a bracket pivoted at 5h to the ring-core frame. On the bracket .35 rests a block 57 which has an in-cut rib or T-rib at one side lying in a complcmental groove in the top of the bracket.

The block 57 has a central groove 58, in which lies a pinion 59 secured to a shaft. tit), operated by a hand lever (31. so that a slide plate (12 fitted on the block 57, and dovetailed, as indicated, may be readily and rapidly adjusted to and from the ring-core 4'2 winch lies inunediately in front. To secure this adjustment the pinion 5!! engages a rack 63 on the bottom of the slide 62. From the slide (32 project ears and from these cars rise posts 64 and (35, which are intended to carry the arms for operating the spinning wheels 66 and 67. These stitching or spinning wheels and their axial supports are carried by two arms 68 and 69.

Pivoted to the posts at 70 and 71 the arms 68 and (19 are operated by a connnon, central hand-lever 72, pivoted to the slide at 73. The hand-lever operates through a yoke 74 and connecting links 75, which are pivoted at one end to a short shaft 76 havmg collars surrounding the end of the yoke 74 and are pivoted at the other end to the arms 68 and 69. The stitching or spinning wheels, as here illustrated, are carried at the end of short arms or shafts 77, 78, and

.each of these shafts is riveted at 79 to the end of a carrying arm. Each of the short shafts 77, 78 has a right angle extension 80, $41, to the end of each of which is connected an arm 82 or 83 forked at one end to embrace the corresponding arm 68 or (it) and relatively secured in place by pins. ()n the inside of each arm 68 and 9 is a flat sprin r 84, 85, held by straps or cli' s 86, 87, througli which the pin also passes so that the yoke link for operating the stitching or spinning wheel is thus spring drawn. In each arm 38 andtit) are recesses 88 and 89, with inclined pockets into which the )ln may snap or he snapped by the spring. lhis arrangement. of inclined pockets is intended to permit the stitching or spinning whccls to be set at different angles so that. they may lirst. for example, spin under the tirc-hcmL then over the bead. and then beyond the head. in the last operation I get a. particularly good result because I am able to turn the wheel at a. short angle, pointing out toward the operator and running the wheel in sharply beyond the head. In thus working with stock over the head, it has heretofore been necessary to do it. by hand, because no provision had been made for get ting the ncccs sary three angles of the stitching or spinning wheel. a

At 90 is illustrated an arm which controls the movement of the block and the till Hill

stitchin or spinning mechanism so that the whole'o that mechanism may be swung to oneside, turning on the pivot roll 56, the arm 90 breaking joint, as indicated, so that the mechanism may be the road by the operator and yet brought back and held firm] during the operation.

It will beobserved that by the open, vcr

tical arrangement of the series of stoclerolls,

that is, one 'above another and spaced apart and by the similar "arrangement of the ten sion rolls which are relative] i placed below the plane of each mrrespomling stock roll, I secure-great capacity for the several layers of fabric within a limited 5 ace WhiIe the rolls are easily accessible. he ring-core is disposed centrally and opposite the rolls and the stitching or spinnin mechanism lies behind the ring-core so tiat all the parts on each side are arranged in a compact system which at the same time permits easy access for adjustment or repair.

The operating and adjusting handles are within easy reach of the operator who stands behind'thc ringcore and the machine may he said to be, in fact, a semi-automatic machine which I consider best adapted for the purposes of tire making. The treadlcs are within easy reach of the operator and they are placed so that one may be operated from the rear and one from the sidr. depending upon the position, or both the high and low speed i'naybe governed by one treadle, as described.

In the operation of this machine the oporator draws from the supply frame the web fabric. He has started the machine by pressing down the treadle 46 so that the ringcore is slowly rotated. This has been caused by the shaft 35 being drawn to the left so that the com: clutch 36 engages the pinion and thus rotates the gear-Wheel l1 and the shaft 40. The operator feeds the layer or layers of fabric over the ring core as he u old do in the use of ring-cure until he has placed the tread around and about the core. He then cuts the fabric, throwing the free end out of the way over the bail 29. During this oporation the block 57 carryin the stitching or spinning mechanism has con pushed to one side swinging with the bracket 55. It is now thrown back swinging in place in front of the ring-core. The operator adjusts the block 57 by the operation of the hand lever 61 which rota cs pinion 59 and reciprocates the slide 62, and pushing over the handle feeds it forward. At the same time by pulling out toward him the center handle 72 he brings 66 and 67 into operation upon the fabric previously laid about the ring-core by the operator. As the operator proceeds he may, for the diil'ercnt operations, shift the angle of the stitching or spinning wheels, pushing the hand operated easily moved out of devices thestitching or spinning wheels tremity of one in the part 87 so that the arms 82 and 83 may slide forward or backward to permit their pins to slip into place in one of the notches of the recess 88 and 89. Practically the same operation follows for each layer of fabric. Through the maniaulation of the treadle 4.15 a low speed has een applied to the ring-core while the fabric is being placed upon it, but when the stitchi or spinning mechanism is ready to operate i h speed is obtained, as described, either by lifting the treadle 46 or depressing the treadle 43.

I have described what I have found in actual operation to he a simple and efficient scmi-autometic mechanism. It will be understood, of course, that the various parts may be changed in form and that such casual parts, for example, as the bail 29 may be omitted or modified without departing From the spirit of my invention.

It will be understood that while I have referred to a split pulley any form of pulley may be used and, in fact, I have shown both forms in the illustration, 2. plain flanged pulley being shown in Fig. l. I

Furthermore, ifhile I have referred to a method of applying layers of fabric o the different rolls and have shown how my ar rungement of stock-rolls and tensiomrolls is especially adapted to such an end it is clear that I may vary the particular arrangement of the different Widths, having, if necessary, a different. width on each of the stock'rolls or, for example. as is sometimes done, the

same width on the lower two rolls and a wider on the upper rolls.

7 claim 1. In a tire-making machine, the combine. tion of a pair of pivoted arms, each arm carrying at one end a spinning roll and at the other end a link pivoted to the corr spending arm. and a hand lever connected an end of each link.

2. In a semi-automatic tire-making machine. the combination of a block, aslide, means for moving the slide on the blopk, a pair of posts carried b; the slide, an" arm. pivoted to each post, a s inning device carried by each arm, a hand slide and pivotally connected to the arms to enable the operator to press the spinning against the tire casing under treatment.

3. A machine of the character described, comprising a frame, a power driven annular form mounted. in said frame, a carriage slidably mountedon said frame, a pair of levers pivotally mounted on frame, a stitchin'groller rotatably mounted upon each of said leve adjacent said annular form, a linkpitotallv connected to the opposite ex-- of said levers, a head pivotully connected to each of said links. a third link pivotally connected to said head and a,

ever pivoted to the i lever pivoted at its lower extremity to said ei'n'ria e, said love! being pivotelly conneete to said last named llnk.

4. In a device of the character described, the combination of a houein and a rotatable form carried thereon, of a racket hingedly connected to the vertical edge of said housing adjacent said orm and erren d for movement in a hOl'i' ontel plane, a ta ile carried at one side of Reid bracket and arranged to be located in front of seid form when the bracket is in the open position, links pivotally connected to said bracket and said hous ing and arranged to normally holcl said atitvhing table in operative [)OHlillUn in rela- 15 tion to said form, and means for limiting the movement of said bracket when it is folded against the housing.

in testimony whereof I have hereunto signed my name in the presence of two wit- 20 nesses.

EDWIN G. MOGRAW.

W itnesses L. M. lKYEh, E. MILEY. 

